Xander Schauffele matched the lowest round in major golf history on Thursday, firing a 9-under-par 62 to seize command after the opening day of the PGA Championship.

Reigning Olympic champion Schauffele started off the 10th tee and birdied five of his first nine holes, then birdied four more after the turn in a bogey-free round for a three-shot lead at rain-softened Valhalla.

"It feels great, Schauffele said. "If someone told me I'd shoot 9-under I'd have taken it. It's a great start to a big tournament."